Day 156 – Concave Mirrors

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Physics 11 – Today we continued with our investigation into mirrors.  Students found the focal length of a mirror by projecting an image from a distant object.  Next they were asked to find the image distance for a given object distance, using three different methods: direct measurement, calculation using the focal length, and doing a scaled ray diagram.

As I noted from last day in physics, I hoped that students could use a cooperative learning environment to successfully solve mirror problems.  It turned out that the substitute felt that kids should work quietly and independently.  Uh huh.

Day 154 – Mirror Equation

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Physics 11 – Today was a very short day for me, as I had to go to the board offices for some training on our new SIS.  It was a good test for the students though: I left a package on doing calculations for mirrors. The idea was to use the readings, worked examples, and student crowd sourcing to figure out how to do these types of questions. Once a student gets a correct answer to a question and feels comfortable with the solution, they put their name on the whiteboard and volunteer as a helper for that question.

Day 137 – Eye Dissection

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Science 8 – A highlight of the year is the sheep eye dissection.  With minimal guidance, students were able to ethically and responsibly dissect the eye.  My peer tutor was a fantastic help during this activity as there are a few places that kids have problems, most noticeably when puncturing through the eye the first time.

I got a chuckle from the kids after the lab when they told me that “finally,  we got to do a lab.” Apparently a science lab isn’t a lab until animal parts are cut into!